our house used to be right here. that is how it used to look on glen view. right now it is burned down completely. >> reporter: pretty amazing. they can see the wreckage, where their home used to be. their home is red tagged. the question is when will they be allowed back in to see what is left if there is anything left of their home. pg&e said if they are responsible for the fire and explosion they will be accountable to the families affected. the salindas one of hundreds of families looking for answers today, trying to understand what happened here and how to move forward. live in san bruno, kimberly terry, nbc bay area news. >> we are going to take a live look at san bruno where we are waiting for a news conference by federal investigators to start. this is where the federal investigators will speak as soon as they are ready to talk to us. state and federal regulators were told had ranked the gas line that ruptured in san bruno as high risk. partly that was because it ran through a highly populated area. that is what we know so far. obviously, we want to